Well, there are a few ways.
But first, you need to check the version of code you already have. Should find the information in the maintenance menus within the game.
Latest code for RFM is 1.6 (1.5 is more commonly available), it can be gotten as a download file and not easy to find installed on an equipped PUB updater board.
Methods:
1. A PUB Updater board, this is a circuit board that plugs into an available ISA slot on the Pin2000 PC Motherboard in the head that contains updated code and updates the game roms on the prism board automatically. Mark C, Wayne G or the usual suspects might have one for sale, the ones I have seen for sale go to about RFM version 1.2 or 1.4. The PUB Updater can also be updated to the later 1.5 and 1.6 code and passed around to other RFM owners (never done this myself). This seems to be the easiest way but ask around the traps and you might get lucky and find an PUB at 1.5 or 1.6 some may be willing to loan you.
2. Using an older PC with DB9 serial port, null modem cable and Williams Pinball 2000 Update Manager Software. If you have those, then you can find an updated code file on the net and use the Update Manager Software to upload it. And no, a USB to serial converter arrangement will not work with the program so the later/newer/newest Laptops with USB only cannot do it, only DB9 serial.
The PUB is the easiest method but hardest part to find with very latest code. You will need to either borrow one off somebody or buy one. The Pinball 2000 Update Manager program is free, the code files are available and free on the net and easy to find but requires an older PC or Laptop to run and do it. I updated my RFM to 1.6 using the Update Manager and bought a PUB card but never used it.
